Steam-engine connection



(No Model.)

G. W. CAREY. STEAM ENGINE CONNECTION.

No. 433,645. Patented Aug. 5, 1890.

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(iecr yew (fare UNITED I STATES PATENT OFFICE.

GEORGE WV. CAREY, OF SALEM, MASSACHUSETTS.

STEAM-ENGINE CONNECTION.

IPEGIFIGATION forming part of Letters Patent No. 433,645, dated August 5, 1890.

Application filed May 28, 1890. Serial No. 352,824. (No model.)

To all whom it may concern:

Be it known that I, GEORGE \V. CAREY, of Salem, county of Essex, State of Massachusetts, have invented an Improvement in Steam-Engine Connect-ions, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to improve the construction of steam-engines, whereby greater power may be exerted upon the crank without increasing the stroke or diameter of the piston to an undesirable degree.

In accordance with this invention the usual piston-rod acts on the long arm of a pivoted lever, to the short arm of which is jointed an auxiliary lever pivoted on a shaft which passes through a suitable radial slot in the short arm referred to, the other arm of said auxiliary lever being jointed to the pitman operating the usual crank of the engine.

My invention therefore consists in the combination, with the cylinderand piston and a pivoted lever operated thereby, of an auxiliary pivoted lever jointed to said lever and to the pitman, to operate, substantially as will be described.

Other features of my invention will be hereinafter pointed out in the claims at the end of this specification.

Figure 1 shows in side elevation a steamengine embodying this invention; Fig. 2, a sectional detail taken on the dotted lines x 0:, Fig. 3 5 Fig. 3, a vertical section taken on dotted lines 0: 00', Fig. 4; and Fig. 4 a top or plan view of a portion of Fig. 1.

Referring to the drawings, the cylinder a, supporting-frame a, and guides a are and may be of any usual construction. The piston-rod b is keyed or otherwise secured to the cross-head I), having an opening to receive the end of the long arm of the lever c, pivoted at c in the supporting-frame C, the short arm of the said lever being represented as forked, and between the two arms thereof at c is journaled the box 0 fitted to slide in a slot 0 in the arm 10 of the auxiliary bell-crank lever 0 pivoted on the shaft 0, extended through suitable radial slots c in the lever c and supported by the frame C. The other arm 12 of the auxiliary bell-crank lever c has a strap 13, which is adjustable on the lever by a screw 14, (see Figs. 1 and 3,) and to the outer end of said arm is jointed the pitinan 0 which drives the crank 0 fast on the drive-shaft c", on which is mounted the usual fly-wheel c As thepiston reciprocates the lever c vertically, the auxiliary bell-crank lever c is rocked on its pivot 0 transmitting to the pitman a horizontally-reciprocating motion which turns the crank.

The bell-crank lever c is represented as having a downwardly-extended arm 50, on which a weight may be placed to counterbalance the working parts.

I have herein shown the shaft 0 as journaled in a box 25, adjustably held in the auxiliary bell-crank lever c by screws 26, in order that the pivotal point may be adjusted to receive the best results.

By referring to Fig. 1 itwill be seen that the power transmitted by the lever c is greatly increased, it being, as herein represented, in the proportion of two to one, while it is again doubled by the short arm of the lever c and the auxi iary bell-crank lever 0 thus greatly. increasing the capacity of the engine without increasing to an undesirable limit the diameter and stroke of the piston.

I do not limit my invention to the particular construction of the auxiliary lever shown,

as the same may be varied without departing from the scope of this invention.

I claim--- 1. The combination, with the cylinder and piston-rod and the pivoted lever c, operated thereby, of an auxiliary pivoted lever jointed to said lever c and to the pitman, to operate substantially as described.

2. The combination, with the cylinder and piston-rod and the pivoted lever c, operated thereby, of a bell-crank lever 0 one arm of which is jointed to said lever and the other arm to the pitman, substantially as described. 5

3. The combination, with the lever c, pivoted at c and having a forked arm provided with slots c of the bell-crank lever 0 pivoted on the shaft 0, passing through said slots, substantially as described.

IOO

4. The combination, with the lever 5, piv- In testimony whereof I have signed my oted at c and having a forked arm provided name to this specification in the presence of with slots 0 of the bell-crank lever 0 pivtwo subscribing Witnesses.

oted 0n the shaft 0, passing through said GEORGE \V. CAREY. 5 slots and having a slot 0 for the box 0 jour- W'itnesses:

naled in said forked arm, substantially as ARTHUR A. FORNESS,

described. HENRY T. I-IUGARD. 

